Weird Server Crash

The whole server froze, and everyone was “Timed Out” and this error spammed the console a few hundred times…

Summary

[02:54:05] [Log4j2-TF-1-AsyncLogger[[email protected]]-1/WARN]: AsyncLogger error handling event seq=3916, value=’’:
[02:54:05] [Log4j2-TF-1-AsyncLogger[[email protected]]-1/WARN]: java.lang.NullPointerException
[02:54:05] [Log4j2-TF-1-AsyncLogger[[email protected]]-1/WARN]: at org.apache.logging.log4j.core.async.RingBufferLogEvent.execute(RingBufferLogEvent.java:161)
[02:54:05] [Log4j2-TF-1-AsyncLogger[[email protected]]-1/WARN]: at org.apache.logging.log4j.core.async.RingBufferLogEventHandler.onEvent(RingBufferLogEventHandler.java:45)
[02:54:05] [Log4j2-TF-1-AsyncLogger[[email protected]]-1/WARN]: at org.apache.logging.log4j.core.async.RingBufferLogEventHandler.onEvent(RingBufferLogEventHandler.java:29)
[02:54:05] [Log4j2-TF-1-AsyncLogger[[email protected]]-1/WARN]: at com.lmax.disruptor.BatchEventProcessor.processEvents(BatchEventProcessor.java:168)
[02:54:05] [Log4j2-TF-1-AsyncLogger[[email protected]]-1/WARN]: at com.lmax.disruptor.BatchEventProcessor.run(BatchEventProcessor.java:125)
[02:54:05] [Log4j2-TF-1-AsyncLogger[[email protected]]-1/WARN]: at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
[02:54:05] [Log4j2-TF-1-AsyncLogger[[email protected]]-1/WARN]: at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
[02:54:05] [Log4j2-TF-1-AsyncLogger[[email protected]5]-1/WARN]: at java.lang.Thread.run(Unknown Source)
[02:54:05] [Log4j2-TF-1-AsyncLogger[[email protected]]-1/WARN]: AsyncLogger error handling event seq=3918, value=’’:
[02:54:05] [Log4j2-TF-1-AsyncLogger[[email protected]]-1/WARN]: java.lang.NullPointerException
[02:54:05] [Log4j2-TF-1-AsyncLogger[[email protected]]-1/WARN]: at org.apache.logging.log4j.core.async.RingBufferLogEvent.execute(RingBufferLogEvent.java:161)
[02:54:05] [Log4j2-TF-1-AsyncLogger[[email protected]]-1/WARN]: at org.apache.logging.log4j.core.async.RingBufferLogEventHandler.onEvent(RingBufferLogEventHandler.java:45)
[02:54:05] [Log4j2-TF-1-AsyncLogger[[email protected]]-1/WARN]: at org.apache.logging.log4j.core.async.RingBufferLogEventHandler.onEvent(RingBufferLogEventHandler.java:29)
[02:54:05] [Log4j2-TF-1-AsyncLogger[[email protected]]-1/WARN]: at com.lmax.disruptor.BatchEventProcessor.processEvents(BatchEventProcessor.java:168)
[02:54:05] [Log4j2-TF-1-AsyncLogger[[email protected]]-1/WARN]: at com.lmax.disruptor.BatchEventProcessor.run(BatchEventProcessor.java:125)
[02:54:05] [Log4j2-TF-1-AsyncLogger[[email protected]]-1/WARN]: at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
[02:54:05] [Log4j2-TF-1-AsyncLogger[[email protected]]-1/WARN]: at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
[02:54:05] [Log4j2-TF-1-AsyncLogger[[email protected]]-1/WARN]: at java.lang.Thread.run(Unknown Source)

It’s worrying, but the server started right back up. What is it??